US Patent: 1,023,023


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Gearing

Patentee:

George O. Leopold (exact or similar names) - Philadelphia, PA

USPTO Classifications:

74/127

Tool Categories:

woodworking tools : hand drills

Assignees:

North Brothers Manufacturing Co. - Philadelphia, PA

Manufacturer:

North Brothers Manufacturing Co. - Philadelphia, PA

Witnesses:

William E. Shupe

William A. Barr

Patent Dates:
Applied:	Sep. 14, 1910
Granted:	Apr. 09, 1912

Patent Pictures:

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Description:

This patent is for a device that will lock the shaft for the removal and insertion of bits. The patent is for an improvement to the #50 reciprocating drill.